The factory retail price of the O-320 varies by model.

The number of buyers who actually take the option, though, varies by model.

The breakdown by model and gender also is expected to remain about the same, according to Roberts.

There was also a gallery at the east end, and a separate staircase for use by models.

Underlays range from $40 to $80 for a 6- by 9-foot model, depending on the quality.

The entire process of the construction is on display by sketches, models and films.

The problem is, to some extent, addressed by models of interdependence.

Motor vehicle production statistics are available for countries worldwide, by country, make, and model.

Prices can vary by model and by region of the country.

The study includes rankings by manufacturers, brands and individual models.